US20140153240A1 - Arrangement for emitting light - Google Patents

Arrangement for emitting light Download PDF

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Publication number
US20140153240A1
US20140153240A1 US14/233,045 US201214233045A US2014153240A1 US 20140153240 A1 US20140153240 A1 US 20140153240A1 US 201214233045 A US201214233045 A US 201214233045A US 2014153240 A1 US2014153240 A1 US 2014153240A1
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US
United States
Prior art keywords
lens
light
arrangement
emitting light
aperture
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US14/233,045
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English (en)
Inventor
Stephan Ebner
Patrik Gassner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZUMTOBEL LIGHTING GmbH
Zumtobel Lighting GmbH Austria
Original Assignee
Zumtobel Lighting GmbH Austria
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=46514390&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=US20140153240(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Zumtobel Lighting GmbH Austria filed Critical Zumtobel Lighting GmbH Austria
Assigned to ZUMTOBEL LIGHTING GMBH reassignment ZUMTOBEL LIGHTING GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: GASSNER, PATRIK, EBNER, STEPHAN
Publication of US20140153240A1 publication Critical patent/US20140153240A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/007—Array of lenses or refractors for a cluster of light sources, e.g. for arrangement of multiple light sources in one plane
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S4/00—Lighting devices or systems using a string or strip of light sources
    • F21S4/20—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports
    • F21S4/28—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports rigid, e.g. LED bars
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/008—Combination of two or more successive refractors along an optical axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the present invention relates to an arrangement for emitting light comprising at least one LED light source and at least one first lens arranged in front of the LED light source in the light emission direction.
  • LEDs have often been used as the light source.
  • LEDs have considerable advantages regarding lifetime and energy efficiency in comparison with conventional illuminants.
  • the light intensities achievable with the aid of LEDs have in the meantime become high enough, such that LED light sources can readily replace traditional light sources such as fluorescent lamps, for example.
  • lenses to be assigned to the LED light sources said lenses being arranged in front of the LED light sources in the emission direction.
  • a plurality of such lenses are joined together in this case to form an elongate optical element, wherein preferably exactly one lens of the optical element is assigned to each LED light source.
  • FIG. 1 shows such an arrangement for emitting light 1 having a housing 3 having a light exit opening, wherein the LED light sources 4 are arranged in the housing 3 and the lenses 6 joined together to form the optical element 2 close the housing 3 in the light emission direction.
  • FIG. 3 shows an optical element 2 consisting of a plurality of lenses 6 .
  • Such optical elements 2 are in this case usually produced by the injection-molding method.
  • the light intensity distribution curve of the lenses 6 shown in FIG. 3 or of the optical element 2 and accordingly also of the arrangement for emitting light 1 is evident from FIG. 2 , wherein the curve illustrated therein corresponds to the values in the C0/C180 plane, that is to say in the transverse direction with respect to the optical element 2 shown in FIG. 3 or the arrangement for emitting light 1 .
  • the light intensity distribution curve shown in FIG. 2 has two mutually separate wings which have in each case a peak region at 15° and flank regions adjacent thereto on both sides, in which flank regions the light intensity falls to a significantly lower value than in the peak region, wherein one of the flanks falls toward the angular range around 0°.
  • the angle between the two peak regions of the wings corresponds to the aperture or emission angle of the light emitted from the first lens. Accordingly, here the aperture or emission angle has a value of 30°.
  • Such a light intensity distribution is advantageous e.g. when a corresponding arrangement for emitting light 1 is intended to be arranged along an aisle having shelves in each case on the right and left, which shelves are intended to be correspondingly illuminated by the arrangement for emitting light 1 .
  • the half aperture or emission angle of 15° evident from FIG. 2 is additionally also depicted again in FIG. 1 .
  • This aperture or emission angle arises as a result of the configuration of the lenses 6 , for which reason this aperture or emission angle can be varied by a corresponding change in the design of the lenses 6 if a different aperture or emission angle of the arrangement for emitting light 1 is desired.
  • the present invention is based on the object of further developing the arrangement for emitting light outlined above in such a way that the aperture or emission angle of the arrangement for emitting light can be varied, without the lenses or the optical element having to be exchanged.
  • the invention proposes an arrangement for emitting light, comprising at least one LED light source and at least one first lens arranged in front of the LED light source in the light emission direction, wherein a second lens for influencing the light emitted from the first lens is arranged in front of the first lens in the light emission direction.
  • the light intensity distribution curve of the light emitted from the first lens in the C0/C180 plane can have in this case two substantially symmetrical, mutually separate wings which lie in each case substantially in an angular range of 0° to 90° relative to an axis parallel to the light emission direction through the light centroid of the first lens and have in each case a peak region and flank regions adjacent thereto on both sides, on which flank regions the light intensity falls to a significantly lower value than in the peak region, wherein the peak region lies at angles of greater than 0° and one of the flanks falls toward the angular range around 0°, wherein the angle between the two peak regions of the wings corresponds to the aperture or emission angle of the light emitted from the first lens.
  • the second lens can be designed and arranged in front of the first lens in such a way that the aperture or emission angle of the light emitted from the first lens is reduced by the second lens.
  • the second lens could also be designed and arranged in front of the first lens in such a way that the aperture or emission angle of the light emitted from the first lens is increased by the second lens.
  • the second lens therefore now makes it possible that the aperture or emission angle of the light emission of the entire arrangement for emitting light can be varied, without the first lens having to be exchanged, the light emission in the C90/C270 plane being influenced in particular by the first lens.
  • second lenses can be assigned only to a portion of the first lenses.
  • FIG. 1 shows an arrangement for emitting light comprising an optical element having a plurality of first lenses
  • FIG. 2 shows the light intensity distribution curve of the arrangement for emitting light shown in FIG. 1 or of the optical element in the transverse direction;
  • FIG. 3 shows an illustration of a plurality of first lenses joined together to form an optical element
  • FIG. 4 shows an arrangement for emitting light according to the invention in accordance with a first embodiment
  • FIG. 5 shows the light intensity distribution curve of the arrangement for emitting light shown in FIG. 4 in the transverse direction
  • FIG. 6 shows an arrangement for emitting light according to the invention in accordance with a second embodiment
  • FIG. 7 shows the light intensity distribution curve of the arrangement for emitting light shown in FIG. 6 in the transverse direction.
  • FIG. 1 shows, as already explained, an arrangement for emitting light 1 known from the prior art.
  • the arrangement for emitting light 1 has a housing 3 having a light exit opening, wherein LED light sources 4 are arranged in the housing 3 and the light exit opening is closed by an optical element 2 .
  • the optical element 2 consists of a plurality of first lenses 6 arranged in front of the LED light sources 4 in the light emission direction.
  • Such an optical element 2 composed of a plurality of lenses 6 is shown by way of example in FIG. 3 .
  • FIG. 2 shows the emission characteristic or light intensity distribution curve of such first lenses 6 or of the optical element 2 and thus of the arrangement for emitting light 1 in the C0/C180 plane and thus in the transverse direction with respect to the arrangement for emitting light 1 or the optical element 2 .
  • This light intensity distribution is suitable, for example, for stores selling merchandise in which, along aisles, on the left and right in each case shelves are arranged relatively near the aisles, which are intended particularly to be illuminated by corresponding arrangements for emitting light 1 .
  • a device 5 is also provided at the top side of the housing, which device enables the arrangement for emitting light 1 to be mechanically fixed to a supporting rail and furthermore makes contact with lines running within the supporting rail.
  • FIGS. 4 and 6 illustrate two exemplary embodiments according to the invention, wherein the arrangements for emitting light 1 shown in FIGS. 4 and 6 otherwise each have the same components as the arrangement for emitting light 1 in FIG. 1 .
  • FIG. 4 shows here a corresponding configuration variant in which a second lens 7 is designed and arranged in front of the first lens 6 in such a way that the aperture or emission angle of the light emitted from the first lens 6 is reduced or decreased by the second lens 7 , the aperture or emission angle tending toward 0° in the case of the variant shown in FIG. 4 .
  • FIG. 5 The corresponding light intensity distribution curve or light emission characteristic with respect to the arrangement for emitting light 1 shown in FIG. 4 is shown in FIG. 5 .
  • the latter in contrast to the light intensity distribution curve shown in FIG. 2 , which reveals two peak regions at 15° in each case, reveals only one peak region at 0°, thus resulting in an aperture or emission angle of 0°.
  • the arrangement for emitting light 1 from FIG. 4 is suitable, for example, for illuminating aisles in stores selling merchandise where no shelves are arranged on the left and right.
  • the second lens 7 comprises a triangle tapering toward the center, wherein the triangle is arranged at that side of the second lens 7 which faces away from the first lens 6 , and the vertex of the triangle points away from the first lens 6 or the LED light source 4 .
  • This triangular shape refracts the light emitted from the first lens 6 with an aperture or emission angle of 15°, or deflects it, in such a way that the aperture angle or emission angle then substantially has a value of 0°.
  • FIG. 4 shows a variant in which the aperture or emission angle is substantially 0°.
  • the aperture or emission angle is substantially 0°.
  • the aperture or emission angle it would also be conceivable for the aperture or emission angle not to be reduced to such a great extent, or to be reduced to an even greater extent.
  • a second lens 8 is provided in front of the first lens 6 and increases the aperture or emission angle of the light emitted from the first lens.
  • the second lens 8 in this case is configured in such a way that the half aperture or emission angle has a value of approximately 30°.
  • the light intensity distribution curve of the arrangement for emitting light 1 shown in FIG. 6 can in turn be gathered here from FIG. 7 , wherein, in comparison with the light intensity distribution curve in FIG.
  • this arrangement for emitting light 1 has a light intensity distribution which, like the light intensity distribution of the arrangement for emitting light 1 shown in FIG. 1 , exhibits two substantially symmetrical wings.
  • the second lens 8 has a wide open V-shape at the side facing away from the first lens 6 , wherein the vertex of the V-shape points in the direction of the first lens 6 .
  • This shape substantially forming the counterpart to the shape of the second lens 7 from FIG. 4 , refracts the light emitted from the first lens 6 , or deflects it, in such a way that the half aperture or emission angle predefined by the first lens is increased from 15° to 30°.
  • an arrangement for emitting light according to the invention can for example also be used for illuminating shelves in wider aisles or with lower suspended heights of the ceilings in sales areas.
  • the previously used arrangement for emitting light 1 is adapted by the simple fitting of the second lens 8 and it is thus ensured that the shelves are correspondingly well illuminated after the reconfiguration of the sales areas as well.
  • the second lens 8 can also be configured such that the aperture or emission angle is increased to a greater or lesser extent.
  • an aperture or emission angle predefined by a first optical unit can be varied by a second optical unit arranged in front of the first optical unit, wherein in the C90/C270 plane an influence (suppression of glare, reduction of luminance, compliance with UGR) is effected in particular by the first lens and the second lens hardly has any influence thereon.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Led Device Packages (AREA)
US14/233,045 2011-07-19 2012-07-18 Arrangement for emitting light Abandoned US20140153240A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102011079393.3 2011-07-19
DE102011079393A DE102011079393A1 (de) 2011-07-19 2011-07-19 Anordnung zur Lichtabgabe
PCT/EP2012/064049 WO2013011048A1 (fr) 2011-07-19 2012-07-18 Dispositif d'émission de lumière

Publications (1)

Publication Number Publication Date
US20140153240A1 true US20140153240A1 (en) 2014-06-05

Family

ID=46514390

Family Applications (1)

Application Number Title Priority Date Filing Date
US14/233,045 Abandoned US20140153240A1 (en) 2011-07-19 2012-07-18 Arrangement for emitting light

Country Status (6)

Country Link
US (1) US20140153240A1 (fr)
EP (1) EP2734777B2 (fr)
CN (1) CN103688104B (fr)
DE (1) DE102011079393A1 (fr)
PL (1) PL2734777T5 (fr)
WO (1) WO2013011048A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202018102205U1 (de) * 2018-04-20 2019-07-24 Zumtobel Lighting Gmbh Linsenanordnung zum Richten des von einem Leuchtmittel emittierten Lichts
DE202019106804U1 (de) 2019-12-06 2021-03-09 Zumtobel Lighting Gmbh Optisches System zum Beeinflussen der Lichtabgabe einer länglichen Lichtquelle

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6170971B1 (en) * 1998-03-31 2001-01-09 Valeo Vision Indicating light display having several light sources

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Publication number Priority date Publication date Assignee Title
TW330233B (en) * 1997-01-23 1998-04-21 Philips Eloctronics N V Luminary
US20060146531A1 (en) * 2004-12-30 2006-07-06 Ann Reo Linear lighting apparatus with improved heat dissipation
JP4376289B2 (ja) * 2005-06-01 2009-12-02 シーシーエス株式会社 光照射装置
US8262252B2 (en) 2005-07-13 2012-09-11 Koninklijke Philips Electronics N.V. Illumination system
JP2007048775A (ja) 2005-08-05 2007-02-22 Koito Mfg Co Ltd 発光ダイオードおよび車両用灯具
EP1998105A1 (fr) † 2007-05-29 2008-12-03 Martin Professional A/S Dispositif d'éclairage avec optique remplaçable
KR100883346B1 (ko) * 2008-08-08 2009-02-12 김현민 패널형 ｌｅｄ 조명장치
DE102010004221A1 (de) 2009-05-05 2010-11-11 Siteco Beleuchtungstechnik Gmbh Straßenleuchte mit punktförmigen Lichtquellen, insbesondere LED-Leuchte
DE202009007292U1 (de) * 2009-05-20 2010-10-07 Hella Kgaa Hueck & Co. Beleuchtungsvorrichtung für Straßen
CN101639196B (zh) * 2009-08-24 2011-07-27 深圳市九拓光电有限公司 一种发光二极管透镜和照明装置
CN102003636A (zh) * 2009-09-03 2011-04-06 富准精密工业(深圳)有限公司 发光二极管模组

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6170971B1 (en) * 1998-03-31 2001-01-09 Valeo Vision Indicating light display having several light sources

Also Published As

Publication number Publication date
CN103688104B (zh) 2017-08-08
EP2734777A1 (fr) 2014-05-28
EP2734777B1 (fr) 2015-06-03
EP2734777B2 (fr) 2019-11-20
PL2734777T5 (pl) 2020-06-29
CN103688104A (zh) 2014-03-26
DE102011079393A1 (de) 2013-01-24
WO2013011048A1 (fr) 2013-01-24
PL2734777T3 (pl) 2015-10-30

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Date Code Title Description
AS Assignment

Owner name: ZUMTOBEL LIGHTING GMBH, AUSTRIA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:EBNER, STEPHAN;GASSNER, PATRIK;SIGNING DATES FROM 20131219 TO 20140108;REEL/FRAME:031985/0228

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION